In my annual message to Congress of December last I declared that—
The war has not been waged with a view to conquest, but, having been commenced by Mexico, it has been carried into the enemy's country and will be vigorously prosecuted there with a view to obtain an honorable peace, and thereby secure ample indemnity for the expenses of the war, as well as to our much-injured citizens, who hold large pecuniary demands against Mexico.
Such, in my judgment, continues to be our true policy; indeed, the only policy which will probably secure a permanent peace.
It has never been contemplated by me, as an object of the war, to make a permanent conquest of the Republic of Mexico or to annihilate her separate existence as an independent nation. On the contrary, it has ever been my desire that she should maintain her nationality, and under a good government adapted to her condition be a free, independent, and prosperous Republic. The United States were the first among the nations to recognize her independence, and have always desired to be on terms of amity and good neighborhood with her. This she would not suffer. By her own conduct we have been compelled to engage in the present war. In its prosecution we seek not her overthrow as a nation, but in vindicating our national honor we seek to obtain redress for the wrongs she has done us and indemnity for our just demands against her. We demand an honorable peace, and that peace must bring with it indemnity for the past and security for the future. Hitherto Mexico has refused all accommodation by which such a peace could be obtained.
Whilst our armies have advanced from victory to victory from the commencement of the war, it has always been with the olive branch of peace in their hands, and it has been in the power of Mexico at every step to arrest hostilities by accepting it.
One great obstacle to the attainment of peace has undoubtedly arisen from the fact that Mexico has been so long held in subjection by one faction or military usurper after another, and such has been the condition of insecurity in which their successive governments have been placed that each has been deterred from making peace lest for this very cause a rival faction might expel it from power. Such was the fate of President Herrera's administration in 1845 for being disposed even to listen to the overtures of the United States to prevent the war, as is fully confirmed by an official correspondence which took place in the month of August last between him and his Government, a copy of which is herewith communicated. "For this cause alone the revolution which displaced him from power was set on foot" by General Paredes. Such may be the condition of insecurity of the present Government.
There can be no doubt that the peaceable and well-disposed inhabitants of Mexico are convinced that it is the true interest of their country to conclude an honorable peace with the United States, but the apprehension of becoming the victims of some military faction or usurper may have prevented them from manifesting their feelings by any public act. The removal of any such apprehension would probably cause them to speak their sentiments freely and to adopt the measures necessary for the restoration of peace. With a people distracted and divided by contending factions and a Government subject to constant changes by successive revolutions, the continued successes of our arms may fail to secure a satisfactory peace. In such event it may become proper for our commanding generals in the field to give encouragement and assurances of protection to the friends of peace in Mexico in the establishment and maintenance of a free republican government of their own choice, able and willing to conclude a peace which would be just to them and secure to us the indemnity we demand. This may become the only mode of obtaining such a peace. Should such be the result, the war which Mexico has forced upon us would thus be converted into an enduring blessing to herself. After finding her torn and distracted by factions, and ruled by military usurpers, we should then leave her with a republican government in the enjoyment of real independence and domestic peace and prosperity, performing all her relative duties in the great family of nations and promoting her own happiness by wise laws and their faithful execution.
If, after affording this encouragement and protection, and after all the persevering and sincere efforts we have made from the moment Mexico commenced the war, and prior to that time, to adjust our differences with her, we shall ultimately fail, then we shall have exhausted all honorable means in pursuit of peace, and must continue to occupy her country with our troops, taking the full measure of indemnity into our own hands, and must enforce the terms which our honor demands.
To act otherwise in the existing state of things in Mexico, and to withdraw our Army without a peace, would not only leave all the wrongs of which we complain unredressed, but would be the signal for new and fierce civil dissensions and new revolutions—all alike hostile to peaceful relations with the United States. Besides, there is danger, if our troops were withdrawn before a peace was concluded, that the Mexican people, wearied with successive revolutions and deprived of protection for their persons and property, might at length be inclined to yield to foreign influences and to cast themselves into the arms of some European monarch for protection from the anarchy and suffering which would ensue. This, for our own safety and in pursuance of our established policy, we should be compelled to resist. We could never consent that Mexico should be thus converted into a monarchy governed by a foreign prince.
Mexico is our near neighbor, and her boundaries are coterminous with our own through the whole extent across the North American continent, from ocean to ocean. Both politically and commercially we have the deepest interest in her regeneration and prosperity. Indeed, it is impossible that, with any just regard to our own safety, we can ever become indifferent to her fate.